Finding the Fourth Proportional to 22,469.67, 31,007.91 and 12,398.18

Step by Step Solution

1. Step 1: Write the proportion equation
   22,469.67 : 31,007.91 = 12,398.18 : x
2. Step 2: Convert to fraction form
   22,469.67/31,007.91 = 12,398.18/x
3. Step 3: Cross multiply
   22,469.67x = 31,007.91 × 12,398.18
4. Step 4: Simplify right side
   22,469.67x = 384,441,494.56
5. Step 5: Solve for x
   x = 384,441,494.56/22,469.67
6. Step 6: Final answer
   x = 17,109.35